Connector Type Banana Plug. 🔧 【Easy Installation & Reusability】 – Color-coded (red/black) and stackable for bi-wiring or bi-amping. 🎛️ 【Universal Compatibility】 – Designed to fit speaker wires from 12 AWG to 18 AWG( 4mm banana plug), and compatible with A/V receivers, amplifiers, surround sound systems, wall plates, and more.